What type of freon does a 1994 Toyota Camry use?
R12 unless it has been converted to r134a, there should be a sticker inside the hood if it has.
It depends on the year of the car. From 1994 on, R134a refrigerant is used. Prior to that, they used R12 refrigerant (Freon). R134a is technically not "Freon". Be alert, however, as many older cars (like my 1986 Camry) have been retro-fitted with R134a systems, and can no longer accept Freon, as the two refrigerants are not compatible.
When you are going to add Freon to a Toyota Camry, you need to know which type to add. You will need to put the Freon recharging coupler to the recharging kit, and get the engine to operating temperature. When the engine is at operating temperature put the air conditioning on the lowest setting and recharge the Freon with the windows of the car rolled down.